Iran is seriously overplaying its hand, and is working overtime to unite sunnis against them. The Iranians and their allies, especially Hezbollah, had better watch out and hunker down, because the Saudis in particular do not treat shiite rivals with kid gloves. I doubt that sunni Arab states could penetrate Iran, which has a formidable intelligence service, but Nasrallah would make a good proxy target.
Egpyt and Saudi Arabia are also furious at the Iranian backed Hamas coup in Gaza and them increasingly calling the shots there.